AN almost pathetic interest attaches to the former of these works, since it is the last scientific communication which Prof. Cope was able to make to the world, and was sent to press only a few days ...

Science Progress (1933-), Vol. 104, No. 4 (2021), pp. 1-26 (26 pages) Singularity is one of the important features in invariant structures in several physical phenomena reflected often in the ...

The article reviews and compares different systems in the primary classification of the order Diptera, including the traditional ones and those of recent catalogues, the cladistic works by Hennig, ...

These documents have been made to support the Eurostat Task Force regarding classification systems for environmental protection and the management of natural resources. The first document concerns the ...

Originally Linnaeus's system relied purely on human judgement in order to compare the characteristics of various organisms. The development of microscopes allowed cells to be examined in far more ...